Can or receptacle for storage batteries.



No. 857,041. PATENTED JUNE 18, 1907; T. A. EDISON.

CAN 0R REGEPTAGLE POE STORAGE BATTERIES.

APPLICATION FILED 90m. 1903.

Witnessesm H Inventor WMW Attorney icicles oi iron which before been attenuated.

onr i on PARK, on; BATTER iT'TEZ -H Specification of Letters Patent.

P:.1'i;ontod June 18, 190?.

Application fllMi Ootolmr 5, 1003i Serial No. 175,819.

To n-ZZ mil/om it nmg concern:

inniorstood, aticnlion is dircclcd to tho sic-- Be it loiown that l, THOMAS A. Einso, of l conipnnyin drawing: l'orming a port. of tho lilewcllyn Pork, Orange, in {he connly 01' sl so State of New Jcrscv, have invented ccry I ,i.

min improvements in Cans or llcccpliiccs for Storage Botterics, of which ihc following is a description.

My iiiivcntion relntcs to :i new and bin proved can or receptacle for stor biliterics preferably ol in iniprowd 'ly c, and whcrcin on alkalinc clcc'lrolybiy is uscd. 'ihcsc cans znrc inadc oi? iron, nickcl-plslcd on the inside, and prcl'cruibl i on the on to: in also, so as not to bc nil'cclcd by the solid ion.

'ihc csscni'inlly novcl i'cnlnrc of in}; iniprovcd can or l'tli'ipiillll consists in looking: tho Sillili) without scams (cxccpt, off coin-so, whore the (iOTOl or cup is :ipplicd) whcrcliy l. do away with tho ncccssity of using soldcr which may be iili'ccl'cd by tho solution, or

which may become loose by tho ilcxing o'l tho walls of the can .in nsc.

The object 01" my in'vcnlion is lo prodncc n seoimlcss iron can or .rcccpinclo al low cost, ond which shall bc very light- :nid strong, so as to bc eminently suited for tho inlcndml purpose.

lrclcrziblc my iinpro'vcd can or 'rcccpmclc is obtsincd b y a process of olccli'o-dcposition and by subsequently annealing the soon, as 1 describe in on application for Lcttcrs liin' cnt Scrinl No. 175,818 'iilcd on even rhilc hcrcwith. So for as .i know no hollow article oi iron similar to ii can or rcccpivzi'clc has ever boon successfully produced by on clcclro-plnt-iilg process bcforo my invention, and 1 3111 not nwaro, in. fact, that such :1 product has over i have found as a result of continncr cxpci'iincnis illiib whcn thczitlvcinpt has boon nnidc to clcctro-plzitc iron on :i. mold or liOlllHPi, lhc dcposil-cd cooling tends to contract, ihcrcby cracking and disrupting the sonic before a layer of 'ii'act'icable thickness is secured. 5. hair discovorcd, howcvor, that, by first applying a coat ing of cop or to tl 1o inold,t-hc con lrzicl ing lcndon is cilectivcly frosistcd, whcrcby :l illll cnoblcdi'zo'obmin n pcr'fccl lyuniform iron dcposit and in this way prodnc; r 13 or rcccprely 'sblo the pnr r U: Wm c v L I in cider nod .i may ho boots;

Figure l, a. sidc clcmtion o f inY iniproved con or rcccpinclc, showing: ihc some in its prcl'crrcd form, and Fig. scclionnl vicw oi lhc siinio.

in both ol' lhcsc Yicws corresponding pnrls :n'o indiczncd by tho sonic nuincrol oii' rcl'crcni-c.

Tho co 1, is :nsdc ol' iron, scznnlcss, and is nickcl-plnlcd on its intcrior and prcl'criibly on ils cxlcrior alsov lhcloinbl'y, l/hc can is provided with horixon'iid coi'rngnlions 2, i'orincd in the sidcs or the can wilhin lhc cdgjcs thcrcol', by dispbicing ihc incliil (as, lor cxoinplc. by sniinblc dies) so as lolicry gicnlly sl'illcn tho sides and pcrniit metal of minimum ihicl-cncss lo be nscd. The can is rchil'ircly narrow and prcscnls a l'orni which could nol pruciimibly bo ininlc by stomping or dri'm'inp; or oihcr proccsscs now 'nscd for producing hollow :n'liclcs. l, ihcrclorc, make illO can by {L proccss ol c, cctro-dcposition, prcl'cinbly :is dcscribod in said. companion application. .ln carrying llllS process into cll'cct, and speaking gcncriilly, ll iirst coat a scclionnl mold or former with pinnilin wax, to which lincly dii'idcd graphite is lightly applicd, after which :i planing; of copper is cleo l IKPliCPUSlbCll thorcon. in this copper film i Lhcn preferably apply a plniing of nickel, cicclrolyiicnlly, :iitcr which tho iron is cloctro-plnlcd on 'llic killer in an iron solution to which has bccn aiddod n bulk of crnshcd charcoal lo nnikc the plat ingr ni'iil'orin mill smooth and to prevent pitting due to the prcscnco of gas bnbblcs. By adding ('ilZll'COfil to the iron solution l lind that a. snnill percentage of carbon is incorporolod with tho dcpositcd iron, which, lhcrcl'orc, in tho snbscqncnt annealing is conrcrlcd prnciicnlly inlo :1 snporior product ol soli stool, containing, according to my analysis, almost A); ol carbon. As a result, tho linishod article is considerably a wriicnl,

tonghcr and inorc rigid than when made of pnro lllll... It will l nndcrsiood, of course, that when some. non-carbonnccons niaicrnil,

like pumice-815mm, is addcd to tho iron soluare separated and the resulting hollow article is removed. The copper iilni originally applied to the mold is now removed electroiytieally, and the article is then annealed, )referably in a non-oxidizing atinosohere, like hydrogen as, in which the cooling is also effected. inally, the edge of the can is trimmed ofi' smooth, and the corrugations, if used, are formed, aiteriwhich the article may he nickel-plated on its exterior and on its interior also if desired, whereupon the can or rec-e taele will be complete. Of course, the nio el-plating of the interior of the can may be effected after the latter has been removed from theformer, hut in'thet ease the deposit will he thinnest at the corners and hey, therefore, be imperfect; while by applying a nickel deposit to the molgfl described and as rs'preferable, the 111m thereof will he thickest at the corners, as is obviously desirable My iin )rovetl can or ret'eptacle is distin guisheil ii'oin seamless articles made by stamping" or drawing a metal blank in the respects, first, that it presents a form which could not be possibly stemmed or and, SZCOHtl, that the metal is not distorted or stretel'iecl, except, of course, to e. slight extent at the corrugation.

Having rhiw (leserihecl Inv invention, What I claim as new therein and iesir'e to secure by Letters Patent is I A seamless can or receptacle made of elect'ro-rlepositetl iron, and carbon incorporated therewith, substantially as set forth.

This specification signed and witnessed this 23ml lay oi (let, i903.

THOH'XS A. EDISON.

drawn; 

